Evaluation of direct in liquid spark plasma on disinfection effectiveness and regrowth control of microbial contamination in urban wastewater
The aim of present study is to evaluate thedisinfection efficiency and regrowth control of microorganism in urban wastewater effluent using cold atmospheric plasma. Two voltages of spark of 20 and 25 kV were applied to wastewater samples of Tehran wastewater treatment plant, Tehran, Iran on 1, 3, an...
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| Format: | Article |
| Language: | fas |
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Nuclear Science and Technology Research Institute
2020-12-01
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| Series: | مجله علوم و فنون هستهای |
| Subjects: | |
| Online Access: | https://jonsat.nstri.ir/article_1174_48504c30feb251bc7dc6b6a13af88533.pdf |
| _version_ | 1797835354753990656 |
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| author | A. Barikani M. Khodadadi S. Khorami Pour |
| author_facet | A. Barikani M. Khodadadi S. Khorami Pour |
| author_sort | A. Barikani |
| collection | DOAJ |
| description | The aim of present study is to evaluate thedisinfection efficiency and regrowth control of microorganism in urban wastewater effluent using cold atmospheric plasma. Two voltages of spark of 20 and 25 kV were applied to wastewater samples of Tehran wastewater treatment plant, Tehran, Iran on 1, 3, and 6 min using oxygen gas supply. The physicochemical characteristics of the effluent sample were determined before and after the treatments. The disinfection efficiency was assessed based on the total colony count and total coliform. The results showed that the COD, BOD5, and the total nitrogen became less than the maximum allowed for agriculture purposes in both treatments, however, this reduction was significantly more in the higher voltage. In terms of bacterial regrowth after disinfection, disinfection efficiency was 100 percent at the beginning of the experiment in all spark treatments, however, total coliform population has become higher than the allowed limit after only one day. This confims the importance of investigating microbial regrowth in wastewater disinfection studies. The spark plasma had no effect on permanent and irreversible inactivation of the total coliform and microbial regrowth occurred. |
| first_indexed | 2024-04-09T14:52:47Z |
| format | Article |
| id | doaj.art-18f95bd639e44df9becd76b6eea19647 |
| institution | Directory Open Access Journal |
| issn | 1735-1871 2676-5861 |
| language | fas |
| last_indexed | 2024-04-09T14:52:47Z |
| publishDate | 2020-12-01 |
| publisher | Nuclear Science and Technology Research Institute |
| record_format | Article |
| series | مجله علوم و فنون هستهای |
| spelling | doaj.art-18f95bd639e44df9becd76b6eea196472023-05-02T09:07:29ZfasNuclear Science and Technology Research Instituteمجله علوم و فنون هستهای1735-18712676-58612020-12-014149210110.24200/nst.2021.11741174Evaluation of direct in liquid spark plasma on disinfection effectiveness and regrowth control of microbial contamination in urban wastewaterA. Barikani0M. Khodadadi1S. Khorami Pour2Department of Environment, Management Faculty, Islamic Azad University, West Tehran Branch, P.O. Box:1468763-785 Tehran, IranNuclear agriculture research school, Nuclear Science and Technology Institute, P.O. Box: 14395-836 Karaj, IranDepartment of Environment, Management Faculty, Islamic Azad University, West Tehran Branch, P.O. Box:1468763-785 Tehran, IranThe aim of present study is to evaluate thedisinfection efficiency and regrowth control of microorganism in urban wastewater effluent using cold atmospheric plasma. Two voltages of spark of 20 and 25 kV were applied to wastewater samples of Tehran wastewater treatment plant, Tehran, Iran on 1, 3, and 6 min using oxygen gas supply. The physicochemical characteristics of the effluent sample were determined before and after the treatments. The disinfection efficiency was assessed based on the total colony count and total coliform. The results showed that the COD, BOD5, and the total nitrogen became less than the maximum allowed for agriculture purposes in both treatments, however, this reduction was significantly more in the higher voltage. In terms of bacterial regrowth after disinfection, disinfection efficiency was 100 percent at the beginning of the experiment in all spark treatments, however, total coliform population has become higher than the allowed limit after only one day. This confims the importance of investigating microbial regrowth in wastewater disinfection studies. The spark plasma had no effect on permanent and irreversible inactivation of the total coliform and microbial regrowth occurred.https://jonsat.nstri.ir/article_1174_48504c30feb251bc7dc6b6a13af88533.pdfcold atmospheric plasmadisinfectionmicrobial regrowthurban wastewater |
| spellingShingle | A. Barikani M. Khodadadi S. Khorami Pour Evaluation of direct in liquid spark plasma on disinfection effectiveness and regrowth control of microbial contamination in urban wastewater مجله علوم و فنون هستهای cold atmospheric plasma disinfection microbial regrowth urban wastewater |
| title | Evaluation of direct in liquid spark plasma on disinfection effectiveness and regrowth control of microbial contamination in urban wastewater |
| title_full | Evaluation of direct in liquid spark plasma on disinfection effectiveness and regrowth control of microbial contamination in urban wastewater |
| title_fullStr | Evaluation of direct in liquid spark plasma on disinfection effectiveness and regrowth control of microbial contamination in urban wastewater |
| title_full_unstemmed | Evaluation of direct in liquid spark plasma on disinfection effectiveness and regrowth control of microbial contamination in urban wastewater |
| title_short | Evaluation of direct in liquid spark plasma on disinfection effectiveness and regrowth control of microbial contamination in urban wastewater |
| title_sort | evaluation of direct in liquid spark plasma on disinfection effectiveness and regrowth control of microbial contamination in urban wastewater |
| topic | cold atmospheric plasma disinfection microbial regrowth urban wastewater |
| url | https://jonsat.nstri.ir/article_1174_48504c30feb251bc7dc6b6a13af88533.pdf |
| work_keys_str_mv | AT abarikani evaluationofdirectinliquidsparkplasmaondisinfectioneffectivenessandregrowthcontrolofmicrobialcontaminationinurbanwastewater AT mkhodadadi evaluationofdirectinliquidsparkplasmaondisinfectioneffectivenessandregrowthcontrolofmicrobialcontaminationinurbanwastewater AT skhoramipour evaluationofdirectinliquidsparkplasmaondisinfectioneffectivenessandregrowthcontrolofmicrobialcontaminationinurbanwastewater |